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Modeling and simulation of a digital control design approach for power supply systems

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5 Author(s)
V. Boscaino ; Dipt. Ing. Elettrica Elettronica e TLC, Univ. degli Studi di Palermo ; G. Capponi ; G. m. Di Blasi ; P. Livreri
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Electronic designers need to model and simulate system features as close as possible to its effective behaviour. Moreover, today, electronics systems are often composed of mixed analog and digital components. The increasing complexity has led to the use of different simulation softwares, each one specific for a particular level of abstraction: mathematical, circuital, behavioural, etc. In order to simulate the entire system these softwares should work together: co-simulation is necessary for digitally controlled power electronics systems. In this paper, the modeling of a digitally controlled switching power supply system using MATLAB/Simulink, ALDEC Active-HDL and Powersys PSIM is presented. The power converter is modelled in PSIM, the digital control is described in VHDL by using Active-HDL, and the complete system is simulated in MATLAB/Simulink environment. This design approach presents all the advantages of each used software and all its features will be discussed. The comparison between simulation and experimental results of the digitally controlled step-down converter prototype are reported

Published in:

2006 IEEE Workshops on Computers in Power Electronics

Date of Conference:

16-19 July 2006